Enhanced transport critical current density of (Bi, Pb)-2223/Ag superconductor tapes added with nano-sized Bi2O3. Issue 16 (December 2016)

• Record Type: Journal Article
• Authors: Yahya, Nabil A.A.; Al-Sharabi, Annas; Suib, Nurul Raihan Mohd; Chiu, W.S.; Abd-Shukor, R.
• Is Part Of: Ceramics international. Volume 42:Issue 16(2016)
• Page Start: 18347
• Page End: 18351
• Publication Date: 2016-12
• Subjects: Nano-sized Bi2O3 -- Flux pinning centers -- Microstructure -- Transport critical current density; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2016.08.166
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Ag sheathed superconductor tapes with starting composition (Bi, Pb)-2223(Bi2 O3 )0.01 were prepared. Bi2 O3 with average size 150 nm was used in this work. The Bi2 O3 amount was chosen based on our initial study on nano-sized Bi2 O3 added pellets which showed an optimal superconducting property for 0.01 wt% addition. Non-added tapes were also prepared for comparison. The tapes were investigated by X-ray diffraction method, scanning electron microscopy and transport critical current density, J c measurements (30 K to 77 K). The influence of different sintering times (50, 100, and 150 h) on J c under applied magnetic field (0–0.75 T at 77 K) parallel and perpendicular to the surface of the tapes was also investigated. J c of added tapes was found to increase significantly as compared with the non-added tapes. The Bi2 O3 added tapes sintered for 150 h exhibited the highest J c at 30 K of 57, 900 A/cm 2 as compared with 19, 400 A/cm 2 for the non-added tapes sintered for 100 h. The improvements in flux pinning and connectivity between grains due to nano Bi2 O3 addition led to the enhancement of J c .